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Engine sounds "Rough"


 
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stuart.newton@gmail.
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Joined: 25 Nov 2013
Posts: 1
Location: Leicestershire

PostPosted: Mon Nov 25, 2013 13:37    Post subject: Engine sounds "Rough" Reply with quote

I have a 1997 Vitara JX Sport 1600 8 valve

Over the last couple of weeks the engine sounds as though the choke is stuck and is rough to the ear. Symptoms are;
After 20 minutes (or so) of a journey-When stationary the engine revs will rise and fall between 1100 & 2500 rpm-Does not happen all the time.
Engines revs will not fall to idle-stick between 1000 & 1500.
Engine will accelerate away evenly and with some power.
No lights come on at dashboard-Suzuki tell me there is no point running a diagnostic.
Plugs replace 10,000 miles ago.
New battery last week.
Recently passed an MOT.

Anybody got any experience of this and can give me an idea of what is going on?

Cheers

Stuart
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neilio
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Joined: 22 Jul 2010
Posts: 64
Location: Hampshire

PostPosted: Tue Nov 26, 2013 16:15    Post subject: Reply with quote

My guess would be the auto choke (if you have one fitted). If this is so, try cleaning the carb with a carb spray cleaner, followed by flushing the coolant through the carb via the inlet pipe through the outlet

What happens is the internals get clogged with corrosion, not allowing the wax element to work correctly, effectively confusing the auto-choke.

Just an idea - good luck.
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denbo
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Joined: 16 Dec 2011
Posts: 104
Location: doncaster

PostPosted: Tue Nov 26, 2013 20:01    Post subject: Reply with quote

"No lights come on at dashboard-Suzuki tell me there is no point running a diagnostic." Well that just shows what they know. I would want to know what the temp sensor  is doing, stft and ltft are doing in live data, just to name a few. If they are not prepared to help go to an independant garage with tech2.
Den
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Basara008
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Joined: 27 Oct 2016
Posts: 2
Location: DFGFDG

PostPosted: Thu Oct 27, 2016 9:18    Post subject: Reply with quote

I am glad to have the same
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crusherboy
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Joined: 06 Mar 2017
Posts: 2
Location: San Diego

PostPosted: Mon Mar 06, 2017 16:33    Post subject: Reply with quote

I have had the same as well.
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